SG42384A1 - Protection system for critical memory information - Google Patents

Protection system for critical memory information

Info

Publication number
SG42384A1
SG42384A1 SG1996007915A SG1996007915A SG42384A1 SG 42384 A1 SG42384 A1 SG 42384A1 SG 1996007915 A SG1996007915 A SG 1996007915A SG 1996007915 A SG1996007915 A SG 1996007915A SG 42384 A1 SG42384 A1 SG 42384A1
Authority
SG
Singapore
Prior art keywords
protection system
memory information
critical memory
critical
information
Prior art date
Application number
SG1996007915A
Other languages
English (en)
Inventor
Peter Stutz
Martin Muller
Daniel Fluckiger
Original Assignee
Ascom Hasler Mailing Sys Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ascom Hasler Mailing Sys Ag filed Critical Ascom Hasler Mailing Sys Ag
Publication of SG42384A1 publication Critical patent/SG42384A1/en

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
    • G07B17/00—Franking apparatus
    • G07B17/00185—Details internally of apparatus in a franking system, e.g. franking machine at customer or apparatus at post office
    • G07B17/00193—Constructional details of apparatus in a franking system
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
    • G07B17/00—Franking apparatus
    • G07B17/00185—Details internally of apparatus in a franking system, e.g. franking machine at customer or apparatus at post office
    • G07B17/00193—Constructional details of apparatus in a franking system
    • G07B2017/00258—Electronic hardware aspects, e.g. type of circuits used
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
    • G07B17/00—Franking apparatus
    • G07B17/00185—Details internally of apparatus in a franking system, e.g. franking machine at customer or apparatus at post office
    • G07B17/00362—Calculation or computing within apparatus, e.g. calculation of postage value
    • G07B2017/00395—Memory organization
    • G07B2017/00403—Memory zones protected from unauthorized reading or writing
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
    • G07B17/00—Franking apparatus
    • G07B17/00733—Cryptography or similar special procedures in a franking system
    • G07B2017/00959—Cryptographic modules, e.g. a PC encryption board
    • G07B2017/00967—PSD [Postal Security Device] as defined by the USPS [US Postal Service]

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Storage Device Security (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
SG1996007915A 1995-04-14 1996-04-03 Protection system for critical memory information SG42384A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/422,435 US5668973A (en) 1995-04-14 1995-04-14 Protection system for critical memory information

Publications (1)

Publication Number Publication Date
SG42384A1 true SG42384A1 (en) 1997-08-15

Family

ID=23674872

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1996007915A SG42384A1 (en) 1995-04-14 1996-04-03 Protection system for critical memory information

Country Status (5)

Country Link
US (1) US5668973A (fr)
EP (1) EP0737944A3 (fr)
JP (1) JPH09134308A (fr)
CA (1) CA2173908A1 (fr)
SG (1) SG42384A1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7226494B1 (en) 1997-04-23 2007-06-05 Neopost Technologies Secure postage payment system and method
US6842742B1 (en) 1996-04-23 2005-01-11 Ascom Hasler Mailing Systems, Inc. System for providing early warning preemptive postal equipment replacement
DE69731056T2 (de) * 1996-04-23 2006-02-23 Ascom Hasler Mailing Systems, Inc., Shelton System zur Bereitstellung einer frühzeitigen Warnung für ein vorsorgliches Austauschen postalischer Geräte
US5987557A (en) * 1997-06-19 1999-11-16 Sun Microsystems, Inc. Method and apparatus for implementing hardware protection domains in a system with no memory management unit (MMU)
US6820065B1 (en) 1998-03-18 2004-11-16 Ascom Hasler Mailing Systems Inc. System and method for management of postage meter licenses
US6897973B1 (en) 1998-03-18 2005-05-24 Ascom Hasler Mailing Systems Inc. System and method for management of correspondence
ATE335258T1 (de) 1998-03-18 2006-08-15 Ascom Hasler Mailing Sys Inc System und verfahren zur verwaltung von frankiermaschinenlizenzen
WO1999048054A1 (fr) 1998-03-18 1999-09-23 Ascom Hasler Mailing Systems Inc. Systeme et procede de gestion de correspondance
ATE300069T1 (de) 1998-03-18 2005-08-15 Ascom Hasler Mailing Sys Inc Betrugssichere frankiermaschinenvorrichtung mit langer nutzungsdauer der batterie
US7028014B1 (en) 1998-03-18 2006-04-11 Ascom Hasler Mailing Systems Tamper resistant postal security device with long battery life
US6583945B1 (en) 1998-10-30 2003-06-24 Iomega Corporation Method for irreversibly write-securing a magnetic storage cartridge
US6488581B1 (en) * 1999-06-22 2002-12-03 Igt Mass storage data protection device for a gaming machine
US6986052B1 (en) 2000-06-30 2006-01-10 Intel Corporation Method and apparatus for secure execution using a secure memory partition
GB2373598B (en) * 2001-03-20 2004-12-29 Thales Training & Simulation L Peripheral component interconnect bus memory address decoding
KR100866951B1 (ko) * 2005-10-28 2008-11-05 삼성전자주식회사 메모리에 저장된 데이터를 보호할 수 있는 프로그래머블프로세서 및 방법
US7895404B2 (en) * 2008-02-14 2011-02-22 Atmel Rousset S.A.S. Access rights on a memory map
TWI806581B (zh) * 2022-04-29 2023-06-21 瑞昱半導體股份有限公司 用來在管線化架構中檢查並更新程式計數器數值的邏輯電路以及方法

Family Cites Families (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3827029A (en) * 1972-09-25 1974-07-30 Westinghouse Electric Corp Memory and program protection system for a digital computer system
US4141068A (en) * 1977-03-24 1979-02-20 Xerox Corporation Auxiliary ROM memory system
DE2842548A1 (de) * 1978-09-29 1980-04-10 Siemens Ag Programmierbare speicherschutzlogik fuer mikroprozessorsysteme
US4388695A (en) * 1980-02-21 1983-06-14 Timeplex, Inc. Hardware memory write lock circuit
US4376299A (en) * 1980-07-14 1983-03-08 Pitney Bowes, Inc. Data center for remote postage meter recharging system having physically secure encrypting apparatus and employing encrypted seed number signals
CH667743A5 (de) * 1981-04-06 1988-10-31 Hasler Ag Vorrichtung zum einstellen einer frankiermaschine und verfahren zum betreiben der vorrichtung.
US4566106A (en) * 1982-01-29 1986-01-21 Pitney Bowes Inc. Electronic postage meter having redundant memory
US4489380A (en) * 1982-04-01 1984-12-18 Honeywell Information Systems Inc. Write protected memory
US4493031A (en) * 1982-08-25 1985-01-08 At&T Bell Laboratories Memory write protection using timers
US4549273A (en) * 1982-12-10 1985-10-22 Ael Microtel Limited Memory access control circuit
US4644494A (en) * 1984-02-06 1987-02-17 Sundstrand Data Control, Inc. Solid state memory for aircraft flight data recorder systems
DE3421540A1 (de) * 1984-06-08 1986-01-02 Audi AG, 8070 Ingolstadt Schliesssystem mit einem batteriebetriebenen infrarot-handsender
EP0173249B2 (fr) * 1984-08-22 1998-07-08 Pitney Bowes Inc. Système de mémoire non-volatile avec possibilité d'enregistrement de données de temps réels et de baisse de puissance pour une machine à affranchir électronique
US4639581A (en) * 1984-12-20 1987-01-27 Hasler Ag Bern Instrument axle for postage meter
US4998203A (en) * 1985-03-12 1991-03-05 Digiulio Peter C Postage meter with a non-volatile memory security circuit
CH668134A5 (de) * 1985-03-15 1988-11-30 Hasler Ag Ascom Vorrichtung und verfahren zum freigeben und kontrollierten einspeichern beliebiger vorgabebetraege in den vorgabespeicher einer frankiermaschine.
US4734851A (en) * 1985-04-17 1988-03-29 Dennis Director Write protect control circuit for computer hard disc systems
DE3680054D1 (de) * 1985-09-20 1991-08-08 Hasler Ag Ascom Vorrichtung zum vereinzeln vorgefalzter faltbarer blattstuecke.
US4805109A (en) * 1985-10-16 1989-02-14 Pitney Bowes Inc. Nonvolatile memory protection arrangement for electronic postage meter system having plural nonvolatile memories
US4802117A (en) * 1985-12-16 1989-01-31 Pitney Bowes Inc. Method of preserving data storage in a postal meter
US4962459A (en) * 1985-12-26 1990-10-09 Mallozzi Joseph D System for accounting for postage expended by a postage meter having data security during printing
US4855920A (en) * 1985-12-26 1989-08-08 Pitney Bowes, Inc. Postage accounting device
EP0264399B1 (fr) * 1986-04-24 1990-02-21 Ascom Hasler AG Butee laterale pour un dispositif destine a separer des pieces de papier d'une pile
WO1989011134A1 (fr) * 1988-05-09 1989-11-16 Ascom Hasler Ag Systeme electronique de calcul et d'enregistrement pour machines d'affranchissement
DE58900854D1 (de) * 1988-06-06 1992-04-02 Hasler Ag Ascom Etikettenspender fuer frankiermaschine.
EP0352498A1 (fr) * 1988-07-14 1990-01-31 Ascom Hasler AG Machine à affranchir
US5163141A (en) * 1988-08-01 1992-11-10 Stenograph Corporation RAM lock device and method for a text entry system
DE3901457A1 (de) * 1989-01-19 1990-08-02 Strahlen Umweltforsch Gmbh Verfahren zur adressbereichsueberwachung bei datenverarbeitungsgeraeten in echtzeit
JPH0812646B2 (ja) * 1989-03-03 1996-02-07 三菱電機株式会社 半導体集積回路
US5340965A (en) * 1989-04-05 1994-08-23 Ascom Hasler Mailing Systems, Inc. Mechanical postage meter resetting device and method
US5363760A (en) * 1989-06-22 1994-11-15 Ascom Hasler Ag Rotor unit for a postage meter machine
EP0422434B1 (fr) * 1989-10-13 1994-12-07 Ascom Hasler Mailing Systems AG Dispositif de mise à la date du timbre à date d'une machine à affranchir
US5237506A (en) * 1990-02-16 1993-08-17 Ascom Autelca Ag Remote resetting postage meter
EP0472677B1 (fr) * 1990-03-14 1994-07-20 Ascom Autelca AG Dispositif de declenchement de machine a affranchir
DE4115152C2 (de) * 1991-05-08 2003-04-24 Gao Ges Automation Org Kartenförmiger Datenträger mit einer datenschützenden Mikroprozessorschaltung
WO1992022126A1 (fr) * 1991-06-07 1992-12-10 Ascom Autelca Ltd. Circuit de commande en charge pour moteur a condensateurs asynchrone monophase alimente par secteur
CA2072456A1 (fr) * 1991-07-31 1993-02-01 Armin Kohler Dispositifs d'interface externe pour machine a affranchir electroniques
US5634000A (en) * 1991-07-31 1997-05-27 Ascom Autelca Ag Power-fail return loop
US5276844A (en) * 1991-08-05 1994-01-04 Ascom Autelca Ltd. Protection system for critical memory information
US5278541A (en) * 1991-08-06 1994-01-11 Ascom Autelca Ag Enhanced reliability in portable rechargeable devices
US5406516A (en) * 1992-01-17 1995-04-11 Sharp Kabushiki Kaisha Semiconductor memory device
US5559992A (en) * 1993-01-11 1996-09-24 Ascom Autelca Ag Apparatus and method for protecting data in a memory address range
US5389863A (en) * 1993-02-08 1995-02-14 Ascom Autelca Ag Rotor movement sensing system
US5377264A (en) * 1993-12-09 1994-12-27 Pitney Bowes Inc. Memory access protection circuit with encryption key

Also Published As

Publication number Publication date
EP0737944A2 (fr) 1996-10-16
CA2173908A1 (fr) 1996-10-15
EP0737944A3 (fr) 1997-08-20
US5668973A (en) 1997-09-16
JPH09134308A (ja) 1997-05-20

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